Phase measurement accuracy in digital holographic microscopy using a wavelength-stabilized laser diode

Yueh Long Lee, Yu Chih Lin, Han Yen Tu, Chau Jern Cheng

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

This work describes the influence of coherent illumination on phase measurement accuracy in digital holographic microscopy (DHM). To improve net phase accuracy in a DHM system, the phase referencing and temporal averaging techniques are applied simultaneously to suppress the phase noises caused by the laser source and image sensor. A comparison between a laser diode operated in single- and multi-modes is given to demonstrate the coherence effect on the fringe visibility and the reconstructed phase accuracy of digital holograms. Axial sub-nanometer accuracy in DHM with the fewest successive hologram recordings is performed using a wavelength-stabilized laser diode in single-mode operation.

Original languageEnglish
Article number025403
JournalJournal of Optics (United Kingdom)
Volume15
Issue number2
DOIs
Publication statusPublished - 2013 Feb 1

Keywords

  • digital holography
  • laser diodes
  • microscopy
  • phase measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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